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\fRefer to Figs. 1-5 and 1-6. If this water tank were part of the city water system, where rates of water use are important, the system in Fig. _ (1-5. 1-8) would be most appropriate Fig. 1-5 Analog system used to interpret float level in water tank. Water tank Pivot Analog Analca Analog Float INPUT PROCESSING OUTPUT V (constant) ANY R Fig. 1-6 Digital system used to interpret float level in water tank. STORAGE Water tank Analog Digital INPUT PROCESSING OUTPUT converter CPU CAT or and other digital display maryRefer to Fig. 1-7(8). This traditional auto fuel tank gauge assembly that senses and indicates the fuel level is an example of a(n) (analog, digital) circuit. Fig. 1-7 (8) Automobile fuel tank sending unit and fuel gauge. Fuel tank gun Blipues +12 V Variable resistor Fuel gauge Float (aimmeter) Automobile fuel tank (a)